Today, the healthcare industry in United States (US) is undergoing an administrative transformation. Medical coding systems are being increasingly adopted by healthcare payers to ensure accurate reimbursement of the healthcare providers. The different coding systems include the International Classification of Diseases, Ninth Revision, Clinical Modification (ICD-9-CM), Current Procedural Terminology (CPT) and the Healthcare Common Procedure Coding System (HCPCS). (Aapc.com, 2015)
The ICD-9-CM classification has evolved from the World Health Organization’s Ninth Revision, International Classification of Diseases. ICD-9-CM classification includes only diagnostic codes that consist of a list of disease code numbers, a disease index in alphabetical order; and
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